Hydrogenation of poly(vinyl cinnamate) thin layer

Hydrogenation of poly(vinyl cinnamate) thin layer

SummaryHydrogenation of poly(vinyl cinnamate) was performed with RhH(CO)(PPh3)3 catalyst with intent to clarify the photoalignment mechanism of liquid crystals on poly(vinyl cinnamate) alignment layer. The hydrogenated cinnamate side group shows the characteristic peaks at 2.9 ppm and 2.5 ppm in 1H-...

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Veröffentlicht in:Polymer bulletin (Berlin, Germany) Germany), 1999-03, Vol.42 (2), p.149-152
Hauptverfasser: EUNG JIN KIM, O OK PARK, KAWANAMI, Y, FURUE, H, KOBAYASHI, S
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Chemical modifications
Chemical reactions and properties
Exact sciences and technology
Hydrogenation
Liquid crystals
NMR
Nuclear magnetic resonance
Organic polymers
Physicochemistry of polymers
Ultraviolet spectra
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Zusammenfassung:SummaryHydrogenation of poly(vinyl cinnamate) was performed with RhH(CO)(PPh3)3 catalyst with intent to clarify the photoalignment mechanism of liquid crystals on poly(vinyl cinnamate) alignment layer. The hydrogenated cinnamate side group shows the characteristic peaks at 2.9 ppm and 2.5 ppm in 1H-NMR spectrum, and a decreasing peak at 280 nm in UV spectrum. This reaction can reveal the role of dimerized or residual cinnamate groups in the applications of the polymeric layer for electronic devices.
ISSN:0170-0839
1436-2449
DOI:10.1007/s002890050446